Also known as Delta-like protein 1 (Drosophila Delta homolog 1) (Delta1).DLL1: Acts as a ligand for Notch receptors. Blocks the differentiation of progenitor cells into the B-cell lineage while promoting the emergence of a population of cells with the characteristics of a T-cell/NK-cell precursor. Interacts with Notch receptors. Expressed in heart and pancreas, with lower expression in brain a

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nd muscle and almost no expression in placenta, lung, liver and kidney.

Also known as Delta-like protein 3 (Drosophila Delta homolog 3) (Delta3).DLL3: Inhibits primary neurogenesis. May be required to divert neurons along a specific differentiation pathway. Plays a role in the formation of somite boundaries during segmentation of the paraxial mesoderm. Can bind and activate Notch-1 or another Notch receptor.

Also known as Delta-like protein 4 (Drosophila Delta homolog 4) (Delta4).DLL4: Plays a role in the Notch signaling pathway. Activates Notch-1 and Notch-4. Binds to Notch-1 and Notch-4. Expressed in vascular endothelium.

Also known as Delta-like protein A (DeltaA).Acts as a ligand for Notch receptors and is involved in primary neurogenesis. Can activate Notch receptors, thereby playing a key role in lateral inhibition, a process that prevents the immediate neighbors of each nascent neural cell from simultaneously embarking on neural differentiation. Required for boundary formation during segmentation of the hi

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ndbrain. Required for midline cell fate specification prior to germ layer formation; regulates specification of floorplate, notochord and hypochord. In inner ear, it prevents adjacent cells from adopting the same cell fate. Plays a role in angiogenesis.

Also known as Delta-like protein B (DeltaB).Acts as a ligand for Notch receptors and is involved in primary neurogenesis. Can activate Notch receptors, thereby playing a key role in lateral inhibition, a process that prevents the immediate neighbors of each nascent neural cell from simultaneously embarking on neural differentiation.

Also known as Delta-like protein C (DeltaC) (delC).Acts as a ligand for Notch receptors and is involved in somitogenesis. Can activate Notch receptors. Required in somite segmentation to keep the oscillations of neighboring presomitic mesoderm cells synchronized.

Also known as Delta-like protein D (DeltaD) (After eight protein).Acts as a ligand for Notch receptors and is involved in primary neurogenesis and somitogenesis. Can activate Notch receptors, thereby playing a key role in lateral inhibition, a process that prevents the immediate neighbors of each nascent neural cell from simultaneously embarking on neural differentiation. Required in somite se